# Week 17 The 0‑slot artifact is gone. * rate(fcr_confirmations_by_slots_total{slots="0"}[5m]) ≈ 0 * clamp_min(rate(fcr_confirmations_total[5m]) − rate(fcr_confirmation_time_seconds_count[5m]), 0) ≈ 0 → no residual 0‑slot artifacts. * 30m distribution: slots="1" dominates; "2" small; "ge3" ~0 * Median slot delay ≈1; p95 ≲2 ![Screenshot 2025-10-04 at 9.26.44 PM](https://hackmd.io/_uploads/r1YpmaChxe.png) P50: ![Screenshot 2025-10-04 at 9.27.41 PM](https://hackmd.io/_uploads/BJWWNaCnxg.png) P95: ![Screenshot 2025-10-04 at 9.28.20 PM](https://hackmd.io/_uploads/rJuQVaR3ll.png) Outcome Distribution : ![Screenshot 2025-10-04 at 9.28.49 PM](https://hackmd.io/_uploads/rJ_rET03ex.png) Head-to-confirmed gap sanity : ![Screenshot 2025-10-04 at 9.29.22 PM](https://hackmd.io/_uploads/rkLDEaRhxl.png) Safe Head Reorg : ![Screenshot 2025-10-04 at 9.29.43 PM](https://hackmd.io/_uploads/H1iuVaR3gx.png)